On to the Card.
6CP – Lightning/Fire
Forward
Job : Class Zero Cadet
Category : Type-0
Legend
9000 Power
“You can dull 1 active Fire Job Class Zero Cadet Forward and 1 active Lightning Job Class Zero Cadet Forward (instead of paying the CP cost) to cast Nine.
When Nine enters the field or attacks, choose 1 Forward opponent controls. Until the end of the turn, it loses 2000 power for each Job Class Zero Cadet you control.”
You will be playing Cadets.
Fire and Lightning.
Might as well play Wind, that way you’ll have access to all the Class Zero Cadets, but since there is no Class Moogle that helps us with the Crystal Points you will likely play a Light or Dark card. Opus I Chaos and Cosmos will work well depending on, if you’d like to play another Light or Dark card.
And if you play your cards right, no pun intended, you’ll be able to get rid of 2 Forwards when Nine enters the field. All you need is a Fire Cadet and a Lightning Cadet, that you will dull for Nine to enter and after that dull Zaidou (10-091C) to give Nine “Haste and First Strike”. You will likely reduce the opponents Forward’s Power more than enough to send it to the Break Zone.
Can’t have a Class Zero without Ace (9-003L), I never took him out of my party when I was playing, so he should be in this deck. Well, that’s my reasoning. That and that you can grab a couple of Cadets and add them to your hand. Plus the 8K body, and that EX Burst, you’ll be knocking out Forwards left and right.
If Deuce (9-052C) was a Backup she would be a Legend, but she is not but, we’ll still play this one.
Trey (3-064H) is probably a card we can do without.
Cater, might as well choose the Backup (3-009C). (13-107C) might work as well, depending on the situation. Maybe play one of each?
Cinque (13-007R), the card that we wanted to build a deck around a Nine was the Legend to do it. Basically you’ll always 
have more than 7 Class Zero Cadets for Cinque to gain Brave, and “When Cinque attacks, choose 1 Character opponent controls. Break it.” This card paired with Nine and Ace and your opponent will not know what hit them. Plus that extra 4K for Cinque makes her a beast.
Sice (3-109C) can work. As can Seven (3-057R), and Eight (13-036R). Eight is Free as it does not state on his card that the cost for Eight cannot be reduced to 0. Jack (3-111H) can be decent for 1CP.
Now which Queen shall we play? 3-151S or 3-104C? Queen (3-104C) has a better ring for this deck, as you’re already Breaking Forwards with Nine, Cinque and Ace. And Speedrush, will give you a free attack.
King (3-006R) is the last cadet, giving all you Class Zero Cadet Forwards +1K. King can also be played by just discarding a Class Zero Cadet from your hand. Doesn’t matter what element it is.
And then there is Machina (3-022H), not worth it. And Rem (3-072R) should work good, as should (9-059R).
Now, we need backups because all the Cadets we chose are mostly Forwards. Arecia Al-Rashia (3-097R), will allow you to search for a Type-0 Forward. Moogle (Class Zero) (3-150S) will give all your Cadets +1K. Khalia Chival (10-089C) will let you grab a Cadet from the Break Zone.
Now. I’m guessing these shall be your building blocks. I’ve seen a couple of decks with Golbez (13-115L). As you can search for any 2CP card in your deck.
That’s what we have for Nine. Any ideas? Let us know.
On the the card.
At 2CP, this card is a no brainer. And with those abilities, she’s deadly. starting at 4K, but each Earth or Water forward gives her +2K. You can just throw her in a deck with Vikings and call it a day. Now if you control 3 other Forwards that are either Earth or Water, she’ll have 10K. And, at 10K she deals your opponent 1 point of Damage at the end of the turn. Your turn, and your opponents. The game will pretty much take care of itself if you just pass and defend Sophie. 
5CP/Lightning
Now, we’ll need to search for Behemoth K, and there’s no one better than Aldo (10-086C) who will search for a Lightning forward. Not only will Aldo let you search for Behemoth K, 
but also for Illua (5-099H). and, everybody loves Illua. And, you can’t forget about Estinien (6-088L). Behemoth K and Estinien is like having Hulk Hogan and “Macho Man” Randy Savage on a tag team. Wait, they were a tag team. The Mega Powers.
On to the Stats.
Let’s find some searchers. Epitav (6-067R) and Kolka (7-069C) will both let you search for Leo. While Luminous Puma (8-080C) will allow you to grab Leo from the Break Zone. You might as well grab Larkeicus (9-076H) to be able to grab Luminous Puma from the Break Zone or to search for him.
when Luminous Puma is put from the field into the Break Zone, you can search for a Luminous Puma and add it to your hand. You can add all sorts of Monsters. Especially ones that turn into Forwards.
Here comes Shara, wind Legend of Opus XIII. As in the game Shara protected Ritz, and that is pretty much what she will be doing.
You’ll want to play as many Final Fantasy Tactics Advance cards as you can get. To keep adding Viera Counters on Shara. And then you’ll just keep using her ability on Ritz.
Right off the bat, we’ll add Marche (11-017H) and Ritz (11-063L) and you’ve won the game. But, we’ll need more cards to complete this deck. Might as well add Llednar (13-108L) because he’s shiny and new. The other Llednar might work as well, both are good cards in my opinion. Doned (11-053H) Will allow you to search for Marche, which will in turn allow you to play Ritz. You’ll need at least one Fire Backup, Black Mage (8-007C) might be a good pick as he’ll add a Viera Counter on Shara. Or you can always play Princess Sarah (11-128H)